State Focus 2 of 8
State Focus Mizoram Railways Infrastructure & Transport Science & Technology

One hundred and fifty three bridges and forty five tunnels carry Mizoram's railway through the hills

The engineering of the Bairabi-Sairang line is what makes Mizoram's rail connectivity possible, and it is in the news as the state presses for railway extension towards its international border. The project comprises 153 bridges, including 55 major bridges, 88 minor bridges and 10 Road Over Bridges or Road Under Bridges. As many as six bridges exceed 70 metres in height, with the tallest rising up to 114 metres, which is 42 metres taller than Delhi's Qutub Minar. The alignment also passes through 45 tunnels stretching over almost 16 kilometres.

Bridges: 153 Tunnels: 45 Tallest bridge height: 114 metres
Why it matters for exams: Comparisons such as the 114-metre pier against the Qutub Minar are favourite one-mark facts.
Kerala PSCUPSCSSC
22 October 2026 Source: Press Information Bureau

In plain words

Road Over Bridge Road Over Bridge — A road carried over a railway line on a bridge.

Pier Bridge pier — The vertical support that carries a bridge deck.

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